因为Failed to connect to github.com port 443 after 21067 ms: Timed out问题，导致上传失败。设置代理端口后，上传畅通无阻。
Failed to connect to github.com port 443 after 21067 ms: Timed out
git config --global http.proxy http://127.0.0.1:7890 git config --global https.proxy http://127.0.0.1:7890
后面的端口需修改为本地的代理端口。
